The move is planned to take place over the course of three nights; May 12, 14, 16, and is part of a $1.9 billion improvement plan of the two new terminals.

During the course of the relocation, Delta will operate out of all four terminals, “This move furthers our progress towards our vision of a Gold Standard Airport,” said Los Angeles World Airports Chief Executive Officer Deborah Flint, in a release.

The Delta move is the first phase in reorganizing a total of 21 airlines within Los Angeles International Airport.